CN85108652A - About the device of endless tow fibrous material cutting short-forming fiber - Google Patents

Abstract

One enters formula fibre bundle cutter outward, comprise the cutter cylinder, cylinder is made up of following: be connected with central actuating shaft to produce the interior circular discs of rotation at that, axially stagger with inner disc that the circumferentially spaced apart cutting blade that is generally radially extension of the outer shroud, a group of certain distance and blade are loaded between above-mentioned inner disc and the outer shroud and the outer rim of blade is its cutting edge.The diameter of the inner surface of outer shroud is only slightly smaller than the motion periphery diameter of above-mentioned cutting edge, and outer shroud by one group of steady arm attached on the inner disc, and each steady arm all has an above-mentioned cutting blade, these steady arms are fixed on the inner disc, and near and be fixed on the inner surface of outer shroud.

Description

About the device of endless tow fibrous material cutting short-forming fiber

The present invention is the relevant outer formula fibre bundle cutter that enters that fibrous material is cut into shorter length that is used in the textile industry.

The device of the modern cutting fiber material tow that uses in textile industry normally enters the formula type as United States Patent (USP) 3485120 is described outside the sort of.These devices are designed to such: not cut fibre bundle helical layer shape ground is on the cutting edge of one group of blade of evolute radially, and these blades are the uniform circumferential array of pivot of pressing cylinder, and blade just is contained on this cylinder.These cylinders include the inner disc of garden shape, and it connects with central actuating shaft and rotates; Outer shroud, it axially is staggeredly arranged by inner disc; One group of cutting blade that normally radially extends, these blades along circumferential arrangement be contained between above-mentioned inner disc and the outer shroud and its outer rim is exactly a blade.

Dish has so just constituted flange periphery with ring, and the fibre bundle on cylinder just rests between these flange peripheries.The pressure roller of a garden cylindricality just in time matches with these edges suitably, and keeps a uniform distance between the cutting edge of the periphery of this pressure roller and blade, and roller forces fibre bundle radially inwardly to go to cutting blade there thus.At first these devices are used for the processing speed per minute up to 500 meters, and still along with the development of the high speed spinning among the man-made fibres industry-stretching production line, speed has significantly surpassed 500 meters of per minutes.Become a principal element in the centrifugal force cutting machine in the past because along with the increase of rotary speed, the quality of uncut fibre bundle add upper cutting edge with interior cutting the quality of fibre bundle be very considerable.

So according to the present invention, such method is proposed now, promptly the diameter of the inner surface of outer shroud answer She Ji Cheng Only be equal to or the diameter on the post surface, garden of ratio cutting edge slightly motion a little bit smaller.

Adopt such structure, during operation by the entrained cut-out of cylinder the quality of fibrous material just can be reduced, and having reduced centrifugal force and the corresponding strength that is added in the fibre bundle that does not cut off thus, the fibre bundle cutter just can be worked under the speed that surpasses 2000 meters of per minutes like this.

Compare favourable like this: the outer shroud inner surface diameter is littler than the garden post surface diameter of cutting edge motion, and the difference of both diameters is less than 15 millimeters.

The present invention also provides a device that fibrous material is cut into short silk.This device includes cutter of the present invention, and enter the supply mode of cylinder between above-mentioned inner disc and the outer shroud in order to the fibrous material that guiding has been cut, the pressure roller of its periphery between inner disc and outer shroud enters cutting blade in order to impel above-mentioned fibrous material to enter above-mentioned cylinder and goes there, and it is very near and can play such effect that certain part of a shell and this shell and outer shroud lean on: promptly can form a subatmospheric area of low pressure by supply mode between above-mentioned shell and cylinder and make air be sucked into the shell atrium to go.

Arrange with above-mentioned cylinder lean on very near be an energy enters usefulness for fibre bundle shell, more favourable like this, i.e. suitable the so that guiding fibre bundle of the relative cooperation in its position enter into that cylinder goes and so that can enter cylinder with fibre bundle by the caused air stream in low pressure alveolus and get on and accumulated enough fibre bundle layers up to there.For an impulsive force that was run into is in the past reduced to the minimal product degree, preferably the diameter of pressure roller is increased, be increased to than the diameter of cutting-cylinder half greatly.

In order to make the present invention be easy to be understood, provided the following description with method for example, each following simultaneously accompanying drawing is with reference to explanation usefulness, in those figure:

Figure 1A is the front view by the concrete enforcement of fibre bundle cutter sweep of the present invention, and shell is cut open to analyse and observe expression.

Figure 1B is the side view of Figure 1A shown device, and some other part is to cut open to analyse and observe expression.

Fig. 2 is the partial enlarged drawing of the drum assembly of this device, and it is to cut along the 2-2 line of Figure 1A, wherein part in addition part not have Hua ， Only be clear in order to express.

Fig. 3 describes the perspective elevation that fibre bundle enters shell and roller assemblies and pressure roller correlation.

Fig. 4 is the cutaway view by cutting blade and steady arm thereof.

Figure 1A and 1B provide total view of this fibre bundle cutting assembly 10, fibre bundle cutter wherein as routine adopts always preferably horizontal direction arrange that this arranges well than vertical direction.CD-ROM drive motor 12 drives synchronous belt 14, and belt 14 is to be connected with driving shaft 16, and axle 16 is to be contained on the bearing 17 and with cutting-cylinder 18 to be connected.Position between pressure roller 20 and the cutting-cylinder 18 cooperatively interacts, so the normal interaction with regard to having suitable between roller 20 and the cutting-cylinder 18.Roller 20 is loaded on the support arm 24, and the adjustment assembly 22 that it can the depended on pressure roller is adjusted routinely like that.

For the centrifugal load of the cutting-cylinder that overcomes the fibre bundle cutter, be necessary to reduce the quality of the entrained fibrous material of cylinder.As shown in Figure 2, can adopt the distance between some assemblies that reduce cutting-cylinder sub-assembly 18 to reach above-mentioned purpose, these assemblies have comprised by be connected to an inner disc 38 of driving shaft 16 by rim 39.Dispose the cutting blade 44 of one group of circumferential arrangement between inner disc 38 and the outer shroud 40.Each blade is contained in 46 li of blade steady arms, and fixing with the blade retainer 42 of annular, and blade retainer 42 is to be connected on the inner disc 38 with screw 43.Blade steady arm 46 is to be fixed on tightly in the hole of inner disc 38 and is that screw-type or other connection means are fixed on the garden cylindrical internal surface 48 of outer shroud 40 with bolt tool 54 radially.

In order to reduce the centrifugal load on the cutting-cylinder assembly, adopted the method that reduces distance between inner disc 38 and the outer shroud 40, reduced the distance of the ring limited 40 thus from cutter blade 44 to external profile diameter.The measure that space between inner disc 38 and the outer shroud 40 is narrowed down is practicable, because spinning-draw speed is higher, fibre bundle is littler, can make the productivity ratio that reaches required.

Usually 40 interior garden post is surperficial can be accumulated as from the upcountry similar leg-of-mutton shape of blade 48 the time by encircling when raw material in the common fiber cutter.According to the present invention, the diameter D1 on ring 40 inner prop surface is equal to or more a little bit smaller than the motion rotating diameter D2 of the cutting edge 45 of cutting blade 44 slightly.The difference of its D2 and D1 is suitable less than 15 millimeters.Such structure, blade steady arm 46 can be come out by bigger garden shape or square materials processing, so just can make it correct cooperation and leans against on the cylindrical internal surface 48 of outer shroud 40, and fix it with bolt tool 54 on surface 48.Can see with reference to Fig. 2 and Fig. 4, the part between inner disc 38 and outer shroud 40 of blade steady arm 46 is that processing is in the slope, this part is just outward-dipping with respect to the cutting blade 44 between inner disc 38 and outer shroud 40 like this, becomes in the drum assembly 18 smoothly thereby the material that cuts down is transferred to from blade.Blade steady arm 46 has longitudinal knife groove 58.Cutting blade 44 just is mounted in wherein.

As shown in Figure 2, outer shroud 40 has an interior poppet surface 52, and this conical surface is that 50 theres stop to the outer face, and the length that this end face axial is given prominence to is longer than the distance of the structure upper support outer shroud 40 that requires.Therefore outer shroud 40 provides the radial flange limit 55 of a routine, reaches between the end face 50 of axially extending so that uncut fibre bundle is stayed roller assemblies 18, and promptly above-mentioned flange 55 and end face are in the stepped region 51 of the outer surface intersection formation of outer shroud 40.

Provide fiber and receive bucket 28, it is close to step 51, and end face 50 is extended in the opening 53 of bucket 28, and making such reason has two.At first, poppet surface 52 flows out the effect that Shi Nengqi supports this fibre bundle from drum assembly 18 when fibre bundle, and poppet surface 52 can guide these fibre bundles to enter to receive in the bucket 28 and goes.Poppet surface 52 bucket of must extending goes within 28 and the fiber that has been cut is directly guided to go in the bucket 28 thus, promptly plants the possibility of fiber from throwing away between outer shroud 40 and the area of space between 28 of struggling against and got rid of.Secondly, the conical surface 52 has supported those may only cut an i.e. fibre bundle through a blade cuts of a termination, these fibre bundles can be close under action of centrifugal force on the poppet surface 52, if these fibers extend in the air-flow of bucket in 28 and go, the air-flow there has very high turbulence level, these fibers fiber that will twist so toward those very near just cut-outs by the there of suffering with it, and can hold these ends that are not cut by near blade, thereby be cut into the fibrous raw material length that does not wait.Therefore the cutting edge that designs cutting blade 44 like this makes this apart from the circumferential distance between each cutting blade that played drum assembly 18 to the distance between the poppet surface 52.

Have between the step 51 that bucket 28 and end face 50 are caused and well cooperatively interact, in fact to form a mazy sealing, such structure can make the fiber that has cut enter bucket 28 not to the utmost suitable flow, and is in order to set up pressure below atmospheric pressure in drum assembly 18.Discharging bucket 28 has a bottom exhaust outlet, and it links to each other with bottom discharge unit 30, and this discharge unit 30 communicates with blower fan or air pump 32 more successively.Blower fan or air pump 32 can make low pressure (being lower than atmospheric pressure) reach in the blade zone of drum assembly 18.Bucket 28 has a lid part 25 and an installing plate 27 and is contained on the hinge 29, and these hinges are to arrange and aim at a plane, extends away and be afraid of position by formed labyrinth sealing device between outer shroud 40 and the discharging bucket 28 in this plane.Thereby just do like this can so that discharging bucket 28 can put from roller assemblies 18 make rolling assembly 18 inspection, dismounting or become simple and convenient by dress again.In order to keep the low pressure in the drum assembly 18, between the bottom of bucket 28 and bottom discharge unit 30, adopted sealing 31, sealing 31 is preferably made to enable the providing even and sealing of longer life with the material of elastically deformable.Bucket 28 provides outside seal for roller assemblies 18, and it is separated the drive part of these mechanisms and fibre cutter 10 to be positioned at after drum assembly 18 and the pressure roller 20 intermediate plate 26 of face portion, and plate 26 provides seal area on every side for drum assembly 18.

Be incorporated in pressure below atmospheric pressure in the roller assemblies 18 and make the optical fiber cutting apparatus 10 can lashing automatically under high speed, fibre bundle be fed to cutter 10 at a high speed with this.In spinning one drawing process of production high speed fibre bundle, the process that spinning one stretches can not be stopped, and stop and must restart troublesomely.Therefore cutter must carry out lashing soon in rotation.Usually this adopts suction gun to finish.When using single cutter to need the short time to cut-off in lashing again or when using two cutters at the conversion cutter, this suction gun utilization injection principle is collected fibre bundle in the gun barrel and by the tube connector system it is delivered in the garbage collector then.Because being enough hanging down, low pressure in drum assembly 18 overcomes the centrifugal blower effect of the cutting blade that fast rotational, air just is drawn into by the space between the blade 44, the fibre bundle that is introduced to space between the inner disc 38 of cutting blade 44 outsides and the outer shroud 40 so just is bound to be pulled to blade 44 and these fibre bundles will be on the cutting edge of blade 44, therefore when the rotary speed of speed that is supplied to the tow that cutter goes and cutter drum assembly 18 was synchronous, cutting process had just begun automatically.Secondly, can after building, introduce fibre bundle thereon in roller assemblies 18 and the low pressure in 28 of struggling against that drum assembly 18 is crossed in one circulation of air and the labyrinth seal zone between 28 of struggling against at cutting blade 44 quilts.This strand air-flow can tend to the fiber that cuts down is pulled down from poppet surface 52 theres, and makes these fibers follow air-flow to flow to bottom discharge unit 30 from 28 theres of struggling against.

A tubular fiber import shell 36 as shown in Figure 3 can be used, it be lead to optical fiber cutting apparatus 10 shell the outside and form an import 60, the discharge end 62 of import shell 36 be arrange with drum assembly 18 very close to, the fibre bundle by import shell discharge end just is directed between the flange of cylinder group position 18 like this.This outlet 62 has an arch to exhaust face 64, the flange periphery of this face and drum assembly 18 from very near, so that when lashing is initial when cylinder during also without any the fibre bundle on cutter blade 44, low pressure in cylinder 18 will cause that one air stream flows through fiber import shell 36, and this just can utilize a suction gun that fibre bundle is worn with high speed.This suction gun must be put quite closely from import 60, consequently can take away fibre bundle from rifle by the air stream of fiber import shell 36 and enter the import shell.

The floss hole of arch end face 64 must be smaller than the distance of 40 of inner disc 38 and outer shrouds, goes so that fiber can supply to drum assembly 18 suitably.Sealing 31, promptly struggle against 28 with outer shroud 40 between labyrinth seal, the sealing that reaching intermediate plate 26 is provided has formed an effective gastight cavity jointly, the low pressure in this assembly chamber will force air to be inhaled in the chamber by filament import shell 36.Fibre bundle import shell 36 is to be contained on the hinge 65, effect by spring 66 makes the arch end face 64 of shell 36 draw close with drum assembly, thereby such structure allows shell 36 can rotate when fibre bundle snarls cylinder accidentally and leaves rolling assembly 18 and avoided the infringement shell.Certainly in order to dismantle or again by for the purpose of the convenience of dress cutter drum assembly 18, fibre bundle import shell also can leave drum assembly 18 to it with manual methods.

Such necessity is sometimes arranged, promptly when first strand of fibre bundle moves, need wear second strand of fibre bundle in drum assembly 18.In this case, thus the air movement that first strand of fibre bundle can stop up between the blade 44 of drum assembly 18 once just no longer can be effectively in order to have worn second strand of fibre bundle in order to the low pressure of wearing first strand of fibre bundle.But it is such with respect to fiber inlet guide 34 and fibre guide wheel 35 to be with hinged fiber import shell 36 that design arrangement becomes, thereby so that second strand of fibre bundle can be brought to by the method for suction gun and enter fiber import shell 36 very close to import 60 places and go there.The air pressure of aspirating rifle then can reduce gets off so that second strand of fibre bundle can lean on first strand of fibre bundle and mechanically be rolled up by it and to draw in when it enters fibre bundle import department shell 36.The convergence type surface of fibre bundle import shell 36 will force second strand of fibre bundle will fall first strand of fibre bundle and between the fibre bundle on the rolling assembly 18, so that second strand of fibre bundle is certain to be pulled to rolling assembly 18 and gets on.In order to realize this point, the floss hole of fibre bundle import shell should be narrower slightly than the distance of drum process your beautiful writings.Certainly, the general structure of fibre bundle import shell 36 is such: entrance point 60 is that brake specific exhaust emission end 62 is big, and the main part of shell 36 should come to a point gradually from the discharge end 62 of entrance point 30 up to its arch terminal 64.Guide in addition 34 and the position of directive wheel 35 are suitable suitable arrangement, to avoid two strands of above-mentioned fibre bundles to contact with each other here being discharged by suction gun and enter into import 60 up to second strand of fibre bundle.

By Figure 1A as seen, the diameter of pressure roller 20 be than the diameter of drum assembly 18 half more greatly.Under the high-speed case of the use of cutter of the present invention, the time that dissection takes place is very short very fast, unless the words fibre bundle that impulsive force reduces can melt.The effect of adopting larger-diameter pressure roller is to provide one comparatively to relax and gradually dissection, relaxes gradually because the diameter increase of pressure roller then will become at the concentrated cross-connecting area of the cutting edge place of cutting blade 44 and pressure roller 20.

When work, this device is to control manipulation by the control panel that is contained on the shell cabinet 11, and cabinet 11 has all been included mechanical linkages of mentioning here.Cutter drum assembly 18 is driven rotation by CD-ROM drive motor 12 by driving shaft 16 and synchronous belt 14.During starting, cutter drum assembly 18 is taken to the rotating speed of requirement by motor and blower fan 32 causes one low-pressure area inwardly to pass to blade 44 theres of drum assembly 18, and this burst low pressure is just introduced one air stream by fibre bundle import shell 36.This strand air stream is to be utilized to guide the free end of fibre bundle to enter near the roller assemblies of the arch end 64 of fiber import shell 36 go there.The cutter blade that low pressure and positive rotation entrainments fibre bundle and thereby it is pulled through propelling sheave 35 and fibre bundle guiding 34 to fibre bundle on the reel assemblies 18 and by fibre bundle import shell 36.

This fibre bundle is on rolling assembly 18 and has enough thickness, so that with pressure roller 20 engagement, this pressure roller 20 force by around fibre bundle fibre bundle of inward flange inwardly and under the intersection cutting of cutter blade 44 and pressure roller 20 peripheries.Fibre bundle that cuts down or raw material then go from the poppet surface 52 that the blade support surface 56 of drum assembly 18 through tilting flows to the end face 50 of axially extending, and the above-mentioned there raw material that cuts down is discharged into discharging bucket 28 and goes.The air stream that enters through the labyrinth seal between outer shroud 40 and the discharging bucket 28 blows afloat these raw materials that cut down and leaves poppet surface 52 and help these raw materials of guiding to enter into air duct, and this passage is from outer shroud 40 through discharging bucket 28 again to bottom discharge unit 30.These raw materials are transferred to suitable place more then, to enter second step that fiber process is become the technical process of final textile material.In order to guide second strand of fibre bundle to go to drum assembly 18, second strand of fibre bundle is to be discharged into import 60 theres of fibre bundle import shell 36 and to be cut first strand of fibre bundle around the device cylinder with activation and mechanically to roll up and draw, and the sure there drum assembly 18 that is pulled to gets on.

On the fiber cutting-cylinder assembly and on uncut fibre bundle on the processing of centrifugal load reach by following measure by thinking of the present invention: reducing the fibre bundle that has been cut need be through the distance of cylinder; The raw material that minimizing has been cut in drum assembly piles up, and this is to accomplish than a little bit smaller outer shroud of cutting blade blade motion diameter slightly by blade steady arm and its diameter that use has been cut tiltedly.This outer shroud 40 also has a tapered outer ends face, and the raw material that the influence of this outer face has been cut is transported to the discharging bucket from drum assembly.The improvement that also has this fibre bundle cutter to provide the guiding fibre bundle to enter the method aspect of fibre bundle cutter, this improvement can make in the initial start process by advantageously having utilized the low pressure in the roller assemblies fibre bundle cutter can be pierced into fibre bundle come when rotating, and perhaps second strand of fibre bundle can be around in first strand of fibre bundle on the drum assembly earlier and mechanically roll up and draw in to come and carry out automatic lashing in the course of the work.The present invention has also improved the dissection of general cutter, a kind of cutting process that more relaxes under high-speed cruising speed promptly is provided, and has reduced the caused fiber fusing of high impact forces between pressure roller and cutting blade thus.

Claims (9)

1, one enters formula fibre bundle cutter outward, it has comprised cutter cylinder (18), and cylinder (18) is made up of following: be connected with the interior garden dish (38) that produces rotation at that with central actuating shaft (16), axially leave with inner disc that the circumferentially spaced apart cutting blade (44) that is generally radially extension of the outer shroud (40), a group of certain distance and blade (44) are loaded between above-mentioned inner disc (38) and the outer shroud (40) and the outer rim of blade is its cutting edge (45).The characteristics of cylinder (18) are: the diameter (D1) of the inner surface of outer shroud (48) is to be equal to Huo Only to omit smaller than motion garden post surface diameter (D2) of above-mentioned cutting edge (45).

2, according to a cutter of right 1, its characteristics have: the difference between the diameter (D1) of the inner surface (48) of all diameters (D2) in the motion garden of cutting edge (45) and outer shroud is equal to or less than 15 centimetres.

3, according to a cutter of right 1 and 2, its characteristics have: outer shroud (40) is attached on the inner disc by one group of steady arm (46), and each steady arm (46) all has an above-mentioned cutting blade (44), these steady arms be fixed on the inner disc (38) and near and be fixed on the inner surface (48) of outer shroud (40).

4, press a fibre bundle cutter of right 3.Its characteristics have: the end portion of steady arm (46) is to be processed into the above-mentioned inner surface (48) of outer shroud (40) to match, a longitudinal knife groove (58) is all arranged with fixing relevant with it cutting blade (44) in each steady arm (46) there, and cut in the part between inner disc (38) and outer shroud (40) of each steady arm (46) oblique, to form an acute angle.

5, a device that fibre bundle is cut into short fiber, this device characteristic is: it comprises a cutter by above-mentioned every claim, the fiber that has cut off for guiding enters the supply method of cylinder (18) usefulness between above-mentioned inner disc (38) and the outer shroud (40), a pressure roller (20) and its have the periphery that is arranged between inner disc (38) and the outer shroud (40) and are introduced into above-mentioned cylinder to impel above-mentioned fibre bundle towards cutting blade (44), and it comprises the part (28) and the mode (30 of adjacent outer shroud (40) shell (25), 32) to maintain low pressure regional between above-mentioned shell (25) and the above-mentioned cylinder (18) so that air can be sucked in the shell (25) by supply mode (36).

6, device by right 5, characteristics have: outer shroud (40) has an axially outstanding annular end face (50), shell (25) has part (28) and (28) opening (53) is arranged, (53) diameter slightly than the maximum gauge of annular end face (50) bigger to hold above-mentioned annular end face, opening (53) forms a labyrinth seal jointly with end face (50) like this, and above-mentioned part (28) has a passway (30) so that the fiber after cutting there emits to keep the low pressure of low-pressure area together with the air stream that is caused by above-mentioned means (32).

7, by a device of right 6, its characteristics have: above-mentioned part (28) is the shape of lid, and it is supported fixing by hinge (29), and hinge (29) is normally by in the plane that comes by above-mentioned labyrinth seal.

8, device by right 5,6 or 7, characteristics are: above-mentioned end face (50) includes a poppet surface (52), this surface (52) is from the outside flare in inner surface there of outer shroud (40), and the distance between the exterior portion of cutting blade (44) and poppet surface (52) is greater than the distance between the adjacent cutting blade.

9, by right 5,6,7 or 8 device, characteristics are: supply mode (36) has comprised fibre bundle import shell, this shell has upper end (60) and lower end (62) and forms one betwixt receives sword shape passage, there is individual arcuate surface (64) above-mentioned lower end (62), what this surface (64) and above-mentioned cylinder leaned on is very near so that guiding fiber whereabouts cylinder, the diameter of upper end (60) communicates greatly and with atmosphere than the diameter of lower end (62), disposed two imports guidings (34) so as the guiding fibre bundle to the upper end (60), above-mentioned guiding (34) is to arrange to such an extent that can separate multifibre and enter into fibre bundle import shell (36) up to fibre bundle.

Images